Bow Collimator Straightener - This is a violin bow straightener made from high-quality steel wire for durable, reliable performance. - Easy to use and provides a straightforward way to practice with a straight bow, helping you build consistent bow control. - Corrects playing posture for beginners and supports the development of good bowing habits. Its double and dual-track design offers stability and comfort during use. - Quiet teacher function: acts as a silent reminder to maintain proper bowing technique and reinforce correct habits over time. - Size compatibility: available for 4/4, 3/4, and 1/2 violins. This bow corrector is versatile and suitable for different musical instruments. - Use scenarios: - At home or in practice rooms, ideal for beginners focusing on straight bowing and proper posture. - In classroom or ensemble settings to guide multiple students and promote consistent technique. - In lessons or practice sessions for players who switch between violin sizes (4/4, 3/4, 1/2) to maintain correct bowing habits across sizes.